Chemical fire-extinguisher.



PATENTED DEG. 18, 1906. l

` E: D. MATTBSON, CHEMICAL PIRE EXTINGUISHER.

APPLICATION FILED JAN. 31, 1906.

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UNITED STATES PATENT OFFIOE.

EDWARD D. MATIESON, OF BUFFALO, NEW YORK, ASSIGNOR TO WESTERN INSPECTIONCOMPANY, OF BUFFALO, NEW YORK.

CHEMICAL FIRE-EXTINGUISHER. i

Specification of Letters Patent.

Patented Dec. 18, 1906.

Application ined January 3l, 1906- Serial NO- 298.791.

To a/ZZ whom, it may concern:

Be it known that I, EDWARD D. LIATTE- SON, a citizen of the UnitedStates, residing at Buffalo, in the county of Erie and State of NewYork, have invented a new and useful Improvement in ChemicalFire-Extinguish ers, of which the following is a specification.

This invention relates to portable fire-exe tinguishers of that kind inwhich theextinguishing agent is generated by the combination of chemicalsubstances normally kept isolated in the extinguisher tank or reservoir.Ordinarily an alkaline solution is contained in the tank or reservoirand an acid which is coniined in an inner receptacle in the tank isdischarged into the alkaline solution when it is desired to use theextinguisher. The inner receptacle usually consists of a bottleremovably secured in a cage or holder in the upper part of the tank orreservoir, and has a stopper, which when the tank is inverted drops andallows the acid to pour from the bottle into the alkaline solution.

The primary object of the invention is to provide a cage or holder forthe inner bottle or receptacle which is of simple, durable, anddesirable construction, adapted for the ready insertion and removal ofthe bottle into and from the same, and which is adapted to securely holdthe bottle notwithstanding va` riations in its size.

In the accompanying drawings, Figure 1 is a fragmentary sectionalelevation of a portable lire-extinguisher embodying the invention. Fig.2 is a sectional elevation in line 2 2, Fig. l, showing the extinguisherinverted. Fig. 3 is a cross-section, partly in plan, on an enlargedscale, of the bottle-cage and bottle. Fig. 4 is a perspective view, on areduced scale, of the bottle-cage. Fig. 5 is a detailed section of theguard in line 5 5, Fig. l.

Like letters of reference refer to like parts in the several gures.

A represents the tank or reservoir of portable chemicalfire-extinguisher, only the upper portion thereof being shown in thedrawings, B the usual screw-cap or cover therefor, and O the innerreceptacle or bottle which holds the acid or one of the chemicalsnecessary to the generation of the extinguishing agent, and which isprovided with a loose stopper c, adapted to open and discharge thecontents of the bottle into the tank or reservoir when the latter isinverted to operate the extinguisher. These parts are all common and theconstruction thereof forms no portion of the invention and they may beof any usual or suitable construction and arrangement.

The inner receptacle or bottle is removably held in the usual cage orholder D, which is suspended in the tank from the cap or cover B, and isremovable from the tank with the cap when the latter is unscrewed.

The cage is of novel construction. It consists of a bottom or platformd, which is supported by upright side rods or bars d', secured at theirupper ends to the cap B. Two or more of these rods could be used, butpreferably there are only two arranged at diametrically opposite sidesof thebottom, being spaced as far apart as possible not to interferewith the removal of the holder through the mouth of the tank, so as toallow a bottle of large diameter to be placed between them in uprightposition on the bottom or platform d. The side bars of the cage orholder are connected between their ends, preferably at about themid-height of the bottlebody, by a cross or back bar d2, which is curvedto embrace and form a back support for the bottle in the cage.

The bottle is releasably clamped and held stationary in the cage betweenthe back bar and a swinging clamping-bar E, hinged to one of the sidebars d and having means for releasably fastening it to the other sidebar. The clampingbar is preferably made of spring metal and has a loopedor bent end e, -which encircles a reduced cylindrical portion e of oneside bar, (see Fig. 3,) whereby it can swing on the side bar, and theend of the loop extends inwardly or toward the bottle, forming aspring-arm e3, adapted to bear against the front side of the bottle andpress the same yieldingly against the back bar d2 of the cage. The freeend of the clamping-bar has an 1nbent hook or shoulder e2, adapted tosnap over a lip or edge on the adjacent side bar. Shoulders f on the oneside bar above andA below the hinge-loop of the clamping-bar andshoulders f on the other side bar above and below the fastening lip oredge prevent the vertical displacement of the clamping-bar, The bottleis clamped firmly between the back and clamping bars and is held frommovement when the extinguisher is inverted.

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The clamping-bar, together with its hinge and fastening means and thespring-arm e3, which bears against the bottle, are made from a singlestrip of metal, being thus exceedingly simple and inexpensive to make.The clamping-bar being adapted to yield will firmly hold bottlesdiffering considerably in size, so that a variation in the size of thebottle will not prevent it from being held rmly and stationarily in thecage. As the internal parts of the extinguisher are subject to corrosionon account of the presence of the chemieals therein, the cage or holderconstructed as described is very desirable on account of having thefewest possible working parts to be rendered inoperative or destroyed bythe action thereon of the chemicals, and the parts can be made large andstrong, and therefore more durable.

The bottom or platform is located far enough below the cap B, from whichit is suspended, to allow the bottle to be inserted in the eage whileheld upright, or nearly so, and it has an upright marginalretainingflange g for preventing the accidental displacement of thebottle. The front portion of the retaining-fiange is low or shallow,making it easy to insert and remove the bottle, 'while the rear portionthereof is considerably higher, so that it will engage the bottle whenit is placed in the cage and prevent the bottle from being inadvertentlyshoved over the edge of the platform or left standing on theretaining-flange in such manner that it could be disengaged from thecage in the handling of the extinguisher.

H represents the opening in the upper portion of the tank or reservoirwith which the usual discharge hose or pipe is connected and which isprovided with the usual strainer h.

I represents a guard or shield for preventing the splashing or sloppingof the solution into the discharge opening and pipe, due to carelesshandling of the extinguisher or to the vibrations thereof when notstationarily supported, as when located on a train, boat,

or other moving or unstable support. The guard consists simply of anarched or bent piece, which bridges the discharge-opening and is securedto the tank. It prevents the entrance of the contents of the tank intothe discharge-opening except through the open opposite ends of the spaceformed by the shield. The shield will thus deflect to opposite sides ofthe discharge-opening any of the solution which might be splashed upagainst it and will thereby prevent loss of the solution and injury tonearby objects on which the solution might otherwise be discharged. Theshield does not prevent a free discharge 6o of the solution when theextinguisher is inverted and the solution is under the pressure of thegas generated in the tank or reservoir( While the bottle-holder isespecially designed and adapted for the described purpose 6 5 inchemical fire-extinguishers, it will be apparent that the constructionclaimed is adapted for releasably holding bottles or analogous articlesfor other purposes.

I claim as my invention- 1. In a fire-extinguisher, a holder for abottle or receptacle, comprising a support, a clamping-bar pivoted tosaid support to swing horizontally and having means for bearingyieldingly against the bottle or receptacle, and fastening means forsaid clamping-bar, substantially as set forth.

2. In a fire-extinguisher, a holder for a bottle or receptacle,comprising a support, a clamping-bar hinged to said support and 8ohaving a projecting yielding portion to bear against the bottle orreceptacle, and fastening means for said clamping-bar, substantially asset forth.

3. In a bottle or receptacle holder for fireextinguishers, or the like,the combination of a support, and a swinging clamping-bar bent at oneend to form a hinge-loop and a projecting spring-arm for bearing againstthe bottle or receptacle, substantially as set forth.

4. In a bottle or receptacle holder for fireextinguishers, or the like,the combination of a support, and a swinging clamping-bar bent at oneend to form a hinge-loop and a proj ecting spring-arm for bearingagainst the bottle or receptacle, and at the opposite end to form afastening part, substantially as set forth.

5. In a bottle or receptacle holder for fireextinguishers, or the like,the combination of a support having a bottom, side supportingbars and across-bar connecting the side bars, and a clamping-bar opposite to saidcross-bar hinged at one end to one of said side bars and having ayielding projecting part to bear against the bottle or receptacle, andmeans for fastening the other end of said clampinglfoarto said otherside bar, substantially as set orth.

Witness my hand this 29th day of J anuary, 1906.

EDIVARD D. MATTESON. Witnesses EDWARD C. HARD, A. L. MCGEE.

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